Laser eye surgery stands for the use of laser in correcting the vision problems through surgery.
It provides a high degree of precision and predictability.
The Food and Drug Administration approved the excimer laser first in October 1995 for correcting nearsightedness.
Presently, the excimer laser is approved for use in a procedure called photorefractive keratectomy (PRK), and, as of November 1998, for a procedure called laser in situ Keratomileusis (LASIK).
PRK reshapes the cornea by removing microscopic amounts of tissue from the outer surface with a computer-controlled ultraviolet beam of light.
The procedure takes just a few minutes, and patients are back to daily routine in one to three days.
Laser Eye Surgery
Credit: National Library of Medicine, National Institutes of Health
Prognosis obtained from statistical data collected shows that:
5 percent of patients continued to always need wearing glasses following PRK laser eye surgery for distance.
15 percent needed glasses occasionally, such as when driving.
Many patients experienced mild corneal haze following laser eye surgery which, of course, later subsided.
Some patients experienced glare and halos around lights for about 6 months after laser eye surgery.
For about 5 percent of patients, however, best-corrected vision without corrective lenses was slightly worse after laser eye surgery than before.
LASIK is another, more commonly used laser eye surgery.
The surgeon uses a knife called a microkeratome to cut a flap of corneal tissue, removes the targeted tissue beneath it with the laser, and then replaces the flap.
Laser Eye Surgery
Credit: National Library of Medicine, National Institutes of Health
In RK, a non-laser eye surgery procedure, incisions are made in a "radial" pattern along the outer portion of the cornea with a hand-held blade. These incisions are designed to flatten the curvature of the cornea, thereby allowing light rays entering the eye to properly focus on the retina. The number and length of the incisions determines the degree of correction achieved.
Radial Keratotomy
Risk factors involved in laser eye surgery and its limitations:
Laser eye surgery is not a foolproof procedure and people may end up with worse eyesight than before they went in.
Glaucoma or diabetes patients are poor candidates for laser eye surgery.
People afflicted with vascular disease, autoimmune disease, or people with certain eye diseases involving the cornea or retina are poor candidates again.
Pregnant women should not have laser eye surgery of any kind because the refraction of the eye may change during pregnancy.
Laser Eye Surgery
Credit: National Library of Medicine, National Institutes of Health
Now, my personal argument starts from this point only, further:
The last point in the above piece of information says: Pregnant women should not have laser eye surgery of any kind because the refraction of the eye may change during pregnancy.
Why?
Why and how can the refraction of the eye change during pregnancy?
May have something to do with the postural changes in the body during pregnancy!
What else otherwise?
And what, in fact, does the laser eye surgery do to the eye?
Laser Eye Surgery
Credit: National Library of Medicine, National Institutes of Health
Let us see:
Cornea is the front most transparent part of the eye that plays its part-role in bending the rays of light falling on the eye in order to focus them at fovea on retina.
If, for whatever reason, the said rays of light fail to focus on retina but do so rather short of it (myopia), behind it (hyperopia and presbyopia) or more so in one meridian and less so in another (astigmatism); a change in the shape of cornea will be able to correct the fault exactly the same way as is done by eyeglasses or contact lenses placed (as they are!) just in front of cornea.
Decentered flap after LASIK
In other words, laser eye surgery including LASIK changes cornea to permanent eyeglasses or contact lenses inside the eye rather than in front of it.
Laser Eye Surgery
After
Credit: National Library of Medicine, National Institutes of Health
Can this be called a treatment?
Or is it just a kind of management exactly like the one done by eyeglasses or contact lenses?
Only that the inconvenience of wearing eyeglasses on, or putting contact lenses in the eyes has been eased off!
What has been the real cause of the problem?
Is it the shape of the cornea, the shape of the lens or the shape of the eyeball?
We must be very clear about it.
If it is the shape, anyway, of anything, what does it mean when the diopter number of the eye increases?
Does the shape change?
What else, otherwise?
If yes, that means the shape is technically able to change.
And if the shape can change to increase the diopter number, it ought to be able to change in a way that decreases the diopter number as well!
Then why do we change it the surgical way?
Simply because we don't know how to change it non-surgically!
Change what?
The shape!
Of?
The cornea, the lens, or the eyeball?!
Whatever, but we don't know how.
But it does change of its own.
And it does so after the surgery too!
What shall we do then?
I personally came across numerous such cases as had been passed as successful and remained so till around eight years after the laser eye surgery but then rolled back to the same old number that was there before the surgery was done.
The diopter number is the same again but the structure of the eye has gone deformed!
What shall we do now?
Again scrap the cornea further?
How long shall we go on doing that?
Epithelial Ingrowth after LASIK
Why are we going on deforming the structure of the eye?
We don't know when and why the shape again starts changing of its own. All our surgical changes, then, will not only go useless but may prove to be harmful too in the long run.
Why does the shape change, and shape of what?
Is it the cornea, or the lens or the eyeball?
Not cornea. It doesn't have the musculature.
Lens certainly does but temporarily and dynamically, according to the need of the moment (not the hour!).
Only the eyeball is left. And it can. It has the musculature to do so.
So it's the eyeball that can change its shape and give the eye a diopter number!
Even after laser eye surgery!
Or it can change the other way round and free the eye of its diopter number without the laser eye surgery!
But not after laser eye surgery! It is bound to keep itself deformed - and only to a particular extent set by the surgery, neither less nor more - in order to see clear because it is permanently wearing the surgical lenses that the cornea has been permanently changed to. Any deviation in any direction, and the eyesight will get the grunt of it. And it does!
The eyeball does keep changing the shape in the normal course of events. It's a dynamic and not a static structure.
But after the laser eye surgery, it is forced to keep itself static - in a deformed shape - just like a bespectacled eye is.
Unluckily, keeping the eyeball statically deformed is a continuous stress to the eye, to the body and to the mind.
Is there a way (of course, non-surgical!) to change the shape of this statically deformed eyeball and turn it dynamically natural?
Immediately?
So that the humanity may get rid of eyeglasses, contact lenses and the most importantly the laser eye surgery menace!
Vision therapy seems to do the job through opening the third eye; and that too, opening it instantaneously.
If it is really so, it must, at least, be given a try before going for the laser eye surgery and causing a permanent deformity in the structure of the eye which can never be undone too!
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